From a bat's perspective, protected riparian areas should be wider than defined by Brazilian laws.

摘要: Abstract Riparian areas around streams are those in which biological communites directly influenced by the stream. The size of protected riparian and their conservation has become a controversial topic after changes implemented Brazilian Forest Code (BFC): set laws that regulates Permanent Protection Areas (PPA). Here, we investigate influence distance from water bodies on bat-species guild composition lowland Amazonian rainforest. Our hypotheses were bat assemblages would change depending to body abundance herbivorous bats (frugivorous nectarivorous) be greater close water. Bats captured with mist-nets 24 25 non-riparian plots within trail grid an old-growth terra-firme forest, northeast Manaus, Amazonas, Brazil. Each plot was sampled three times total 7056 net-hours. We 1191 bats, comprising 51 species. used model selection based AIC (Akaike Information Criterion) compare linear piecewise regressions estimate ecological thresholds for different assemblages. Piecewise models one breakpoint more parsimonious than data, species animalivorous frugivorous bats. Animalivorous-bat increased stream about 181 m, frugivorous-bat decreased 50 m patterns suggest may need access most conservative suggests variation occurs extends up 114 m banks. Therefore, 30 m wide strip forest law maintain relatively small fraction Ducke Reserve, is insufficient represent assemblage-composition zone. suggestion reduce width zone 30 15 m smaller 10 m wide, as under discussion, likely prejudicial